Apparatus for cooling milk



(N0 Model.) 2 Sheets-Sheet l.

L. H. PORTER.

APPARATUS FOR COOLING MILK.

No. 602,956. Patentd Apr. 26,1898.

Ig zglev (No Model.)

2 Sheets-Sheet 2. L. H. PORTER. APPARATUS FOR COOLING MILK.

Patented Apr. 26

byihgzssas w: mam-us Perms c0, womuma. wAsnmm'Qm-o. r.

in the county of Milam and State of Texas,

UNITED STATES arena sures.

LOUIS l'l. PORTER, OF.ROCKDALE, TEXAS.

APPARATUS FOR srncrrronrrou forming part of Letters Application filed August 2'7, 1896.

To all whom it may concern.-

Be it known that I, LOUIS H. PORTER, a citizen of the United States, residing at Rockdale,

have invented a new and useful Apparatus for Regulating the Temperature of Milk, of which the following is a specification.

My invention relates to an apparatus for regulating the temperature of milk, and has for its object to provide a simple, inexpensive, and efficient construction and arrangement of parts, including a folding frame and detachable receptacles, any desired number of which may be employed.

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims. r

In the drawings, Figure 1 is a perspective view of an apparatus arranged for cooling milk. Fig. 2 is a vertical sectional view of the same. Fig. 3 is a perspective view of the frame folded. Fig. 4 is a detail perspective View showing the perforated concave top of a receptacle for cooling milk. Fig. 5 is a detail sectional view of the upper portion of the apparatus, showing the reservoir and contained can.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

The frame of the apparatus embodying my invention is of folding construction and comprises pivotally-connected members having, respectively, parallel side bars 1 and 2, con nected transversely at intervals by crosspieces 4, adapted to support rests 5. These rests are preferably detachable and may be of any desired construction, those illustrated in the drawings consisting'of parallel bars 6, arranged at such an interval as to support shallow drip-pans 7, having front outlet-openings or droppers 8, arranged above the plane of the bottom to form a water seal, as hereinafter described.

Pivotally mounted upon the rear section of the folding frame is an extension 9, adapted to support a reservoir 10, having a dropper 11, provided with a regulating-valve 12. The upper ends of the rear section are provided COOLING WHLK.

Patent No. 602,956, dated April 26, 1898.

Serial No. 604,144. (No model.)

ward-swinging movement of the extension, and the sides of the latter are connected by a cross-bar 3, cut away at an intermediate point to form a rest for the reservoir 10. This reservoir, which is designed to contain a refrigerating liquid, consists of an exterior opentopped receptacle 13, in which is snugly fitted a can 14, provided at one end with a handle 15 and at the other end with a valve 16, said valve being provided with an exterior loop 17, engaged by a transverse limiting-pin 18, which spans the opening surrounded by the valve-seat. This valve opens inwardly to allow the can to be filled with refrigerating liquid, and when the can is carried by means of its handle the valve is held closed by the pressure of the contained liquid; but when introduced into the shell the pressure of the exposed end of the looped stem upon the bottom of the shell unseats the valve, and thus allows the liquid to escape through the dropper, controlled by the regulating-valve above described.

The covering'receptacles 19 are arranged in the drip-pans 7 which are of larger diameter than the receptacles in order to project laterally beyond the exterior surfaces thereof, and each receptacle is fitted with a jacket of tex tile absorbent material, such as cheese-cloth or its equivalent, adapted to be moistened by the refrigerating liquid, as water, and cool the contents by evaporation. The jacket preferably extends approximately to the bottom of the receptacle and covering the top thereof, said top being closed. In practice I prefer to employ sheet-metal cans, which are inverted upon the drip-pans to cover the containers in which the articles to be cooled are arranged, the lower edges of the cans being submerged in the sealing liquid contained in the pans.

The tops 19 of the receptacles 19 are concaved and are provided around the outer edges with perforations 19, formed by punching the sheet metal upward from the interior to provide a ridge around the perforations. The fabric jacket will by capillary attraction draw the refrigerating liquid from the center of the concaved top 19 and cause the same to run down the sides into the drip-pan -7 without any liquid passing through the perforawith beveled stop-blocks 3 to limit the fortions. These perforations, although covered by the fabric jacket, will permit the escape of gases. Instead of providing separate receptacles 19 a single covered receptacle may be employed, and when this construction is used the cover is made concave, similar to the top 19.

In connection with the water or similar liquid which I preferably employ as a refrigerating liquid I have also found it expedient to use a refrigerating and purifying compound consisting of flowers of sulfur and saltpeter in equal parts, said substances being arranged in a sack 20 or its equivalent and being deposited in the bottom of the shell of the reservoir or feeder. I have found in practice that when the above-mentioned materials are inclosed in the receptacle provided between the spaced bottoms of the reservoir and the inverted can the cooling elfect upon the contents of the receptacles exposed to the refrigerating liquid is increased. This substance also performs the functions of a germicide to prevent the absorption by the contents of the receptacles of microbes and is odorless and tasteless.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having described my invention, what claim is- 1. An apparatus of the class described, hav ing a folding frame comprising pivotally-connected sections adapted to fold in a common plane and having side bars connected at corresponding intervals with cross-bars, a pivotal extension mounted upon the rear section and adapted to fold between the sides thereof, the forward-swinging movement of the extension being limited by a round forming the pivot of the sections, loose bars forming rests arranged upon said cross-bars, a reservoir for refrigerating liquid suspended upon said extension and provided with feeding devices, and receptacles arranged respectively upon said rests and each provided with means for dropping the surplus refrigerating liquid upon the next lower receptacle of the series, substantially as specified.

2. In an apparatus of the class described, the combination of a supporting-frame provided at different elevations with rests, shallow drip-pans supported by said rests, receptacles arranged within the drip-pans and pro vided with concave tops perforated adjacent to the outer edges, absorbent jackets arranged on the receptacles, and a reservoir located above the receptacles, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

LOUIS I-I. PORTER.

Witnesses:

W. S. BURNET, E. L. SNIVELY. 

